lost audio

I DON'T KNOW WHAT I'M DOING HELP I WAS DELETING AND I THINK I GOT RID OF MY AUDIO SOUND I DID THIS B\4 BUT WAS ABLE TO DOWNLOAD SOMETHING TO GET MY SOUND BACK,I ASKED FOR HELP B\4 PEOPLE TELL ME U DON'T WHAT YOUR DOING GO BUY A NEW SOUND CARD... BUT I KNOW I MESSED UP B\4 BUT I GOT TO DOWNLOAD MY SOUND BACK/ help me.thankssis530 pc100systemboard oem computer pci sound pro driver hsp56 HELP.WIN.98 PAT